For the study, colorectal cancer tumour samples were collected from 34 patients and transcriptome sequencing of the samples was done to classify them into consensus molecular subtypes of colorectal cancer. To quantify relative abundances of bacterial strains in the samples, 16S rRNA amplicon metabarcoding was done and the non-human part of the transcriptome data was also analysed. Analysis of the association between the subtypes and microbiome was carried on and the targeted quantitative PCR was done to confirm the findings.
No associated publication
No sample metadata fields
View SamplesTumor recurrence and metastasis remain unavoidable due to a distinct tumor subpopulation known as cancer stem cells (CSCs). To explore the unique cell types contribute to colorectal cancer (CRC) progression, we profiled 831 single cells by simultaneous analysis of RNA sequencing (scRNA-seq) and telomere length in the same cell. Specific markers CD44, CD133 and LGR5 were used to enrich. We find small subpopulations with special features including quiescent CSCs, and epithelial lineage cancer cells (EPCs). Those quiescent CSCs have distinct features including higher level of pluripotency and Wnt signature, and shorter telomeres. Lineage tracing analysis showed that quiescent CSCs could plasticized and generate to epithelial lineage cancer cells with high proliferation and telomeres elongation, and these cells could also transform to each other. New marker genes for CSCs were identified including PROX1, TNFRSF19 and SMOC2. Survival analysis revealed that higher signatures of CSCs and EPCs predicts poor clinical outcome in CRC patients and could be a prognostic biomarkers. These findings provide insight into molecular classification of colorectal cancers and telomere function in CSCs.
No associated publication
Sex, Age, Specimen part
View SamplesDiethylstilbestrol (DES) inhibits the differentiation of female reproductive tracts during fetal and neonatal days . We examined global gene expressions in the oviduct, uterus and vagina in newborn mice with or without DES. These results suggest understanding the mechanism of the differentiation of female reproductive tracts.
Gene expression change in the Müllerian duct of the mouse fetus exposed to diethylstilbestrol in utero.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Dual-species transcriptional profiling during systemic candidiasis reveals organ-specific host-pathogen interactions.
Sex, Specimen part
View SamplesThe opportunistic fungal pathogen Candida albicans is a common cause of life-threatening nosocomial bloodstream infections. In the murine model of systemic candidiasis the kidney is the primary target organ while the fungal load declines over time in liver and spleen. To get a better understanding of the organ-specific differences in host-pathogen interaction during systemic murine candidiasis, we performed a time-course gene expression profiling to investigate the differential responses of murine kidney, liver and spleen and determined the fungal transcriptome in liver and kidney. We clearly demonstrate a delayed immune response on the transcriptional level in kidney accompanied by late induction of fungal stress response genes in this organ. In contrast, early upregulation of the proinflammatory response in the liver was associated with a fungal transcriptional profile resembling that of phagocytosed cells, suggesting that the resident phagocytic system contributes significantly to fungal control in the liver. Although no visible filamentation occurred in the liver, C. albicans hypha-associated genes were upregulated, indicating an uncoupling of gene expression and morphology during infection of this organ. In vitro the induction of hypha-associated gene expression in yeast cells led to altered interaction with macrophages, suggesting that the observed transcriptional changes affect host-pathogen interaction in vivo. Consistently, the combination of host and pathogen transcriptional data in an inference network model implied that C. albicans cell wall remodeling and metabolism were connected to the immune responses in kidney and liver. Furthermore, the network suggested links between fungal iron acquisition and amino acid metabolism in the kidney and host organ homeostasis. Thus, this work provides novel insights into the organ-specific host-pathogen interactions during systemic C. albicans infection.
Dual-species transcriptional profiling during systemic candidiasis reveals organ-specific host-pathogen interactions.
Sex, Specimen part
View SamplesThe opportunistic fungal pathogen Candida albicans is a common cause of life-threatening nosocomial bloodstream infections. In the murine model of systemic candidiasis the kidney is the primary target organ while the fungal load declines over time in liver and spleen. To get a better understanding of the organ-specific differences in host-pathogen interaction during systemic murine candidiasis, we performed a time-course gene expression profiling to investigate the differential responses of murine kidney, liver and spleen and determined the fungal transcriptome in liver and kidney. We clearly demonstrate a delayed immune response on the transcriptional level in kidney accompanied by late induction of fungal stress response genes in this organ. In contrast, early upregulation of the proinflammatory response in the liver was associated with a fungal transcriptional profile resembling that of phagocytosed cells, suggesting that the resident phagocytic system contributes significantly to fungal control in the liver. Although no visible filamentation occurred in the liver, C. albicans hypha-associated genes were upregulated, indicating an uncoupling of gene expression and morphology during infection of this organ. In vitro the induction of hypha-associated gene expression in yeast cells led to altered interaction with macrophages, suggesting that the observed transcriptional changes affect host-pathogen interaction in vivo. Consistently, the combination of host and pathogen transcriptional data in an inference network model implied that C. albicans cell wall remodeling and metabolism were connected to the immune responses in kidney and liver. Furthermore, the network suggested links between fungal iron acquisition and amino acid metabolism in the kidney and host organ homeostasis. Thus, this work provides novel insights into the organ-specific host-pathogen interactions during systemic C. albicans infection.
Dual-species transcriptional profiling during systemic candidiasis reveals organ-specific host-pathogen interactions.
Sex, Specimen part
View SamplesTransgenic (Probasin driven Myr-AKT)or wild-type littermates were treated with RAD001 or placebo and sacrificed at 12 and 48 hours following the beginning of treatment
mTOR inhibition reverses Akt-dependent prostate intraepithelial neoplasia through regulation of apoptotic and HIF-1-dependent pathways.
No sample metadata fields
View SamplesEstrogen induce organ-specific cell proliferation and development in female reproductive organs, though the reproductive differentiation, sex maturation, implantation and lactation. However, the mechanism of organ-specific estrogen responsive genes is unknown. Thus, we examined early estrogen responsive genes in mouse uterus, vagina and mammary gland.
Comparison of estrogen responsive genes in the mouse uterus, vagina and mammary gland.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Expression profiling and functional analysis of Populus WRKY23 reveals a regulatory role in defense.
Specimen part
View SamplesTo investigate the function of poplar WRKY23, we generated PtWRKY23-overexpressing and -underexpressing (RNAi) plants. Transgenic plants were inoculated with Melampsora rust or mock-inoculated for assessment of rust-resistance and for gene expression profiling using the poplar Affymetrix GeneChip to study the consequences of PtWRKY23 overexpression and underexpression. Transcriptome analysis of PtWRKY23 overexpressors revealed a significant overlap with the Melampsora-infection response. Transcriptome analysis also indicated that PtWRKY23 affects redox homeostasis and cell wall-related metabolism.
Expression profiling and functional analysis of Populus WRKY23 reveals a regulatory role in defense.
Specimen part
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